'Cleansed' in the Bible

In fact, under the Law almost everything is cleansed with blood, and without the shedding of the blood there is no forgiveness.

Thus it was necessary for these earthly copies of the things in heaven to be cleansed by these sacrifices, but the heavenly things themselves are made clean with better sacrifices than these.

Otherwise, would they not have stopped offering them, because the worshipers, cleansed once for all, would no longer be aware of any sins?